Ammonium phosphate flash evaporation chamber improved structure

Abstract

The invention discloses an ammonium phosphate flash evaporation chamber improved structure which comprises a flash evaporation chamber (1), a feed pipeline (2), a slurry circulating pump (3), a slurry heater (4) and a discharge pipeline (5). The part, close to a pipe opening on the bottom, in the flash evaporation chamber is provided with a cross-shaped sheath (6). Therefore, compared with the prior art, the ammonium phosphate flash evaporation chamber improved structure is low in cost, simple, and easy to process; the slurry circulating pump maintains the stable feeding velocity through the effect of the cross-shaped sheath, the slurry turbulent flow phenomenon is prevented, and further, the possibility of bonding slurry into blocks is reduced; meanwhile, slurry, which is bonded into blocks, can be prevented from entering the feed pipeline, so that the blocking possibility of the slurry heater is reduced, the driving rate is improved, and further, the production cost is lowered while the production efficiency is improved.

Description

technical field [0001] The invention relates to an ammonium phosphate flash chamber, in particular to an improved structure of the ammonium phosphate flash chamber. Background technique [0002] The ammonium phosphate flash chamber is a kind of production equipment used in the production of ammonium phosphate to realize the neutralization and concentration process, and it is one of the main equipment in the production of ammonium phosphate. Its function is to circulate the high-temperature and high-pressure ammonium phosphate slurry through the heater through the slurry circulation pump, so that the water in the ammonium phosphate slurry can be vaporized rapidly to achieve vapor-liquid separation, thereby increasing the concentration of the ammonium phosphate slurry. [0003] Ammonium phosphate is used as the basic raw material for the production of compound fertilizers. Its production process can generally be divided into preparation of phosphate rock slurry, extraction and...

AI Technical Summary

Problems solved by technology

However, because the ammonium phosphate slurry has a certain degree of cohesion, it will be bonded layer by layer on the surface of the inner cylinder wall of the flash chamber to form a block, which will fall off under the impact of the slurry, and then block the equipment. The discharge nozzle or the circulation pump block the heater tube bundle, so it is necessary to stop frequently to clean the heater and flash chamber during production, which requires high production costs and greatly affects the operating rate of the device, which in turn will seriously affect the phosphorus Ammonium Production Efficiency

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